package collection;

import java.util.ArrayList;
import java.util.Collection;

public class CollectionDemo3 {
	public static void main(String[] args) {
		Collection c = new ArrayList();
		Point p = new Point(1,2);
		System.out.println(p);
		System.out.println(c);
		
		p.setX(100);
		System.out.println(p);
		System.out.println(c);
	}
}
